Tire Brand: Nitto

Tire Model: NT420S

Check Nitto NT420S tire size chart to find maximum tire inflation as set by manufacturer for your Nitto NT420S tire size. Remember that tire pressure value printed on Nitto NT420S tire sidewall is a maximum tire pressure that Nitto NT420S tire can support when carrying its maximum weight capacity, and it is not a recommended tire pressure setting for your vehicle.

Keep in mind that Nitto NT420S tires can naturally lose 1 to 2 psi of tire pressure monthly, so check Nitto NT420S tire pressure regularly to keep tires inflated at recommended level.

Tire pressure is also affected by changes in temperature. As a rule, tire pressure for Nitto NT420S tires will change by about 1 psi for every 10 degrees Fahrenheit change in atmospheric temperature. Maintain proper Nitto NT420S winter tire pressure by compensating air pressure to your vehicle's recommended tire pressure level when temperatures drop.


Nitto NT420S Tire Inflation Chart

Nitto NT420S tire pressure chart with maximum tire inflation for each tire size.

Tire Size Load Index Speed Rating Max Tire Pressure
235/55R18 104 V 50 psi
245/45R20 103 V 50 psi
255/40R20 101 V 50 psi
255/45R20 105 V 50 psi
255/50R18 106 V 50 psi
255/50R19 107 V 50 psi
255/50R20 109 V 50 psi
255/55R18 109 V 50 psi
255/55R19 111 V 50 psi
265/35R22 102 V 50 psi
265/40R22 106 V 50 psi
265/50R20 111 V 50 psi
275/40R22 108 V 50 psi
275/45R19 108 V 50 psi
275/45R22 112 H 50 psi
275/55R19 111 V 44 psi
275/55R20 117 H 50 psi
275/60R17 110 V 44 psi
285/30R24 103 V 50 psi
285/35R22 106 W 50 psi
285/35R24 108 V 50 psi
285/40R20 108 V 50 psi
285/40R22 110 V 50 psi
285/45R22 114 H 50 psi
285/50R20 116 H 50 psi
295/30R22 103 V 50 psi
295/35R24 110 H 50 psi
305/30R26 109 H 50 psi
305/35R24 112 H 50 psi
305/40R22 114 H 50 psi
305/40R23 115 H 50 psi
305/45R22 118 H 50 psi
305/50R20 120 H 50 psi
315/35R24 114 H 50 psi

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